The Genius Guide to The Relics of the Godlings is a book that presents either new magic items, relics, that grow with their owners. Minor items appropriate for 1st level characters when gained, they expand in utility and might as characters gain levels. The 19-page PDF includes:
How to Use Relics in Your Campaign
*Relics as Minor But Growing Artifacts
*Relics as Omni-Items
*Relics as Player Options
The Cost of Relics: Paying the Piper
*Relics as Feats
*Relics As Templates
*Relics as Assumed Treasure
*Relics as Money Sinks
*Relics As Power Boosts
]Relic Rules
The Relics
*Aegis
A golden shield that protects its bearer, and can be called upon to unleash the power of the face of the first medusa!
Asklepian
The ultimate symbol of healing, the staff grows with ever-expanding curative magics, and just a bit of magic offense.
Gjallarhorn
The gjallarhorn is a mighty curved bullhorn, more than a foot in length, with a stoppered mouthpiece at its tip and a sturdy rune-covered leather strap bolted to it with silver rivets. It serves as both a symbolic vessel of the drinks of the gods (able to give life and hold magic within itself), and as a war-horn able to embolden warriors and summon creatures to aid its wielder.
Kilaka
The kilaka is a ritual dagger, designed to aid the wise in understanding and working magic, and is often used in place of other spell foci.
Nageling: The Berserker Blade
Nageling is The Berserker Blade, the weapon that represents both the wrath felt in the heat of battle, and the righteous fury brought on by an offense only combat can settle.
Seven League Boots
The seven league boots are legendary footwear imbued with divine powers of movement, agility, and luck. They aid their wearer in making greater and greater leaps, eventually granting the power to jump seven leagues (21 miles) with a single step.
Tarnhelm
This mighty relic grants the wearer the powers of invisibility and stealth. It takes the form of a helmet, though the exact appearance varies based on the culture of the godling or hero who receives it.
Tunggal Panaluan
This dark magic staff is made of gnarled, black-lacquered wood carved with humanoid figures, and topped with a fetish made of humanoid hair and flesh taken from foes. It is a dread fetish imbued with the powers of death, undeath, and vitality; a symbol of the cycle of life tilted to benefit its wielder at the cost of other creatures.
Creating Relics for Your Campaign
*Relic Templates
**Relic Staff Template
**Relic Weapon Template

On the level 13 power on the Relic Weapon:
Level 13: Grants an enhancement bonus to
two ability scores. The weapon need not be
drawn to grant this benefit, but must at least
be on the character’s body.

What exactly is the enhancement bonus? Is it
equal to the +magical bonus of the weapon?

Now if they are paying for the Minor Relic at first level do you suggest giving it to them? Having them choose a feat (Minor Relic), or an equipment Trait (Minor Relic)?

I'm using the feats to advance the relic.

My temptation would be to have them pay 300 gp of starting money to have a 1st level relic, because they won't have paid for the feat yet. But that's a really minor point in the grand scheme, so do whatever works best for your campaign.